Process of and apparatus for continuously forming a bias corrugated strip



9, 1932- c. TUMULTY ET AL PROCESS OF AND APPARATUS FOR CONTINUOUSLY FORMING A BIAS CORRUGATED STRIP Filed Jan. 6. 1930 M m m E 0 a W w AM A 4 a, mr a L v M 4rmdww B a u a w a f Patented Aug. 9, 1932 UNITED STATES PATENT OFFICE CHARLES L. TUMULTY AND FORREST H. TUMULTY, F ANDERSON, INDIANA, ASSIGNORS OF SEVENTEEN PER GENT T0 NEEL MCCULLOUGH, SEVENTEEN PER GENT TO GEORGE W. PIERCE AND SEVENTEEN PER GEN T TO FRED MUSTARD, ALL OF ANDERSON,

INDIANA PROCESS OF AND APPARATUS FOR CONTINUOUSLY FORMING A BIAS CORRUGATED STRIP Application filed January 6, 1930. Serial No. 418,852.

This invention relates to a process of and a machine for continuously forming a corrugated strip.

The chief object of the invention is to form continuously a corrugated strip by arranging the material in predetermined relationship and subjecting said material to predetermined operation whereby a biased and corrugated strip is obtained and which may be of any width less than the width of the corrugating rolls and will not crowd said rolls.

The chief feature of the invention consists in forming a biased corrugated strip by presenting a portion of the material forming the same at a predetermined angle to cor.- rugating rolls having the corrugations or teeth thereon at anangle greater than the angle of presentation in an amount substantial-j 1y equal to the difference between the angle of biasing ofthe corrugations in the completed sheet and the angle of presentation.

This invention is an improvement upon the process and apparatus disclosed in the Amesbury Patent No. 1,051,660 dated January 28, 1913 and the improvement consists in the angular presentation of the material to corru gating rolls, the angle of inclination of the corrugation being materially less than 45.

The full nature of the invention will be understood fromthe accompanying drawing and the following description and claims:

In the drawing, Fig. 1 is a front elevation of apparatus for forming the process and illustrating one embodiment of the machine for performing the same. Fig. 2 is a side elevational View thereof. Fig. 3 is a top plan view of several rolls.

In the drawing indicates a pair of side frames which provide a plurality of superimposedbearings 11, 12 and 13, said bearings being adjustable in the respective slots 14, 15 and 16. Bearings 11 support a heatedpressure roll 17. Bearings 12 support a heated corrugating roll 18 and bearings 13 support a heated corrugating roll 19.

Two side frame members 10 are connected by the cross head construction 20. The cross head construction pivotally supports an auxiliary frame having the parallel cross head 21 supporting upright portions 22 which in turn provide bearings23 for the shaft 24 supporting a roll of paper stock 25.

The shaft 24: is extended as at 26 beyond one of the bearings and associated therewith is a brake construction indicated generally by the numeral 27 for imposing suitable tension upon the strip being unwound therefrom. The roll is the supply for strip 28 which passes over idler roll 29 adjustably mounted by the arms 30 upon an angular extensionSl of the auxiliary frame including the cross head 21 and uprights 22. The depending portion 32 of the extension adjustably supports the bearing brackets 33 in turn supporting an idler roll 3% over whichthe strip 28 passes and said roll is positioned such that the strip as it leaves the same passes directly in a substantially horizontal plane, to the corrugating rolls 1S and 19 and passes tangentially through the corrugating rolls. i

The auxiliary frame mounts rollers 35 supported by brackets 36 which prevent cooking of, the auxiliary frame about a horizontal axis. Interposed between the main frame and the auxiliary frame is a worm and worm wheel construction, the worm being indicated by numeral 37 and the wheel by numeral 38 and the worm and worm wheel are actuated. by a crank 39 pivot-ally supported in bracket 40 carried by the cross head 20. Bosses carry cooperating scale graduations 43 whereby the amount ofangularity may be determined of the auxiliary frame mounting the supported supply roll and the two auxiliary or idler rolls.

As shown in Figs. 1 and 2 both rolls 18 and 19 are provided with biased corrugations 4A which mesh with each other. he spiralling of the teeth is approximately 15 while the angle of inclination of the auxiliary frame is 12. The paper strip 28 that passes through the corrugating rolls even though presented in biased relation thereto is discharged from the rolls with its side edges substantially transverse to the roll axis and with the corrugations formed therein and extending in biased relation at an angle substantially 9 to a perpendicular to the side edges.

From the aforesaid it will be noted that the angular difference between the angle of presentation and the angle of biasing of the corrugated stock is substantially that of the angular difference betwn the angle of presentation and the angle of spiralling of the corrugations upon the corrugating rolls. The several adjustments provided insure predetermined presentation of the strip to the corrugating rolls.

Each of the corrugating rolls is provided with a plurality of transverse grooves 50 and suitable fingers or tongues 51 are associated with said grooves and serve to deflect or direct the corrugated sheet so that it will pass partly around one roll instead of passing directly thru the meshing corrugated rolls.

The main frame including the side arms 10 supports a tank or trough 52 in which is mounted an adhesive supply roll 53 and the same contacts a transfer roll 54 said roll being also grooved with the grooves registering with the grooves 50 so as to clear the retaining fingers. The amount of adhesive supplied to the supply roll is regulated by an adjust-- I ably mounted scraper plate 55 and the adhesive is applied to one face of the corrugated sheet -while it is rolling around with the lower corrugating roll.

An extension of the frame rotat-ably supports in bearings 61 a shaft 62 mounting a supply roll 63. The strip 64 therefrom passes upwardly and toward the corrugating rolls and beneath the same and over the pressure roll 17. The corrugated sheet mounted upon and carried with and by the lower corrugating roll has the exposed faces of the corrugations supplied with adhesive from transfer roll 54 and this adhesive comes in contact with the sheet 64 as the latter passes rearwardly between the lower corrugating roll and the pressure roll. In this passage the two sheets are united to form a multiple sheet in which biased corrugations are provided and this sheet leaves the two lowermost rolls before mentioned in a direction perpendicular to the axes of said rolls.

In other words the angular relationship existing between the several portions of the device and'the material is such that a corrugated strip with corrugations in biased relation is continuously discharged from the apparatus in a direction substantially perpendicular to the axes of the rolls which is indicative that there is no crowding or lateral shifting of the stock in its treatment such as heretofore has been the case with all other attempts to form a continuous sheet of corrugated paper board the corrugations of which are biased other than transverse to the longitudinal direction of the sheet travel.

While the herein described process and apparatus appears to be quite simple and obvious it is to be understood that the industry has been attempting for the past decade to strip of biased corrugated board comprising, continuously presenting a strip of paper stock in biased relation to the axes of and to two parallel meshing rolls having corrugations biased thereon and continuously pre senting a noncorrugated facing strip to the corrugated strip substantially transverse to the axes of the rolls.

2. The process of forming a continuous strip of biased corrugated board comprising presenting a strip of paper stock at an angle to the perpendicular of the axes of meshing corrugated rolls, and to the rolls for forming corrugations in the strip biased to the width thereof, the roll corrugations being biasedan amount substantially equal to the angle of presentation plus the angularity difference between the angle of presentation and the angularity of the paper corrugations.

3. A device for forming an elongated strip of biased corrugated board including a pair of meshing biased toothed corrugating rolls, a supply roll, means supporting said roll with its axis at an angle to the axes of the corrugating rolls, and means for maintaining the strip stock from the supply roll in substantially the same angular relation to said rolls until received thereby.

4. A device for forming an elongated strip ofv biased corrugated board including a pair of meshing biased toothed corrugating rolls, a supply roll, means. supporting said roll with its axis at an angle to the axes of the corrugating rolls, comprising an auxiliary frame 'adjustably supporting said supply roll and arranged to shift the same into the adjusted angular position, and means for. maintaining the strip stock from the supply roll in substantially the same angular relation to saidrolls until received thereby, said last mentioned means being supported by the auxiliary frame and simultaneously shiftable with the supply roll support.

5. A device for forming an elongated strip of biased corrugated board including a pair of meshing biased toothed corrugating rolls, a supply roll, means supporting said roll with its axis at an angle to the axes of the corrugating rolls, comprising an auxiliary frame adjustably supporting said supply roll and arranged to shift thesame into. the adjusted angular position, means for; maintaining the strip stock from the supply roll in substantially the same angular relation to said cor rugating rolls until received thereby,and an adjustable support upon said auxiliary frame for adjusting the position of said maintaining means upon said frame, said maintaining means being simultaneously shiit'table with the supply roll support.

6. A device for forming an elongated strip of biased corrugated board including a pair of meshing biased toothed corrugating rolls, a supply roll means supporting said roll with its axis at an angle to the axes of the corrugating rolls, means for maintaining the strip stock from the supply roll in substantially the same angular relation to said rolls until received thereby, and brake means associated with said supply roll for maintaining a predetermined tension in the supply strip.

7. The process of producing an elongated so-called continuous strip with biased corrugations, consisting of supplying to a pair of meshing parallel corrugated rollers having corrugations other than parallel or transverse to the roller axes, a strip of stock to be corrugated and the direction of strip travel prior to roller engagement being biased to the roller axes, supplying a continuous base strip, the direction'of base strip travel being in alignment with the finally completed strip, and transverse to the roller axes, and supplying the corrugated strip to the base strip, the direction of corrugated strip travel being biased to the base strip travel, and adhesively uniting the corrugated and base strips.

In witness whereof, we have hereunto affixed our signatures.

CHARLES L. TUMULTY. FORREST H. TUMULTY. 

